Daikin FTKD50BVMA - Part 6 Service Diagnosis

Si12-411A
Service Diagnosis 163
Part 6
Service Diagnosis
1. Caution for Diagnosis..........................................................................164
1.1 Troubleshooting with the Operation Lamp ...........................................164
2. Problem Symptoms and Measures .....................................................166
3. Service Check Function ......................................................................167
4. Code Indication on the Remote Controller ..........................................168
4.1 Error Codes and Description of Fault ...................................................168
5. Troubleshooting ..................................................................................169
5.1 Indoor Units ..........................................................................................169
5.2 Outdoor Units .......................................................................................170
5.3 Indoor Unit PCB Abnormality ...............................................................171
5.4 Freeze-up Protection Control or High Pressure Control.......................172
5.5 Fan Motor or Related Abnormality .......................................................174
5.6 Thermistor or Related Abnormality (Indoor Unit)..................................177
5.7 Shutter Drive Motor / Shutter Limit Switch Abnormality .......................178
5.8 Signal Transmission Error (between Indoor and Outdoor Units)..........179
5.9 Unspecified Voltage (between Indoor and Outdoor Units) ...................180
5.10 Freeze-up Protection Control ...............................................................181
5.11 OL Activation (Compressor Overload) .................................................183
5.12 Compressor Lock .................................................................................184
5.13 DC Fan Lock ........................................................................................185
5.14 Input Over Current Detection ...............................................................186
5.15 Four Way Valve Abnormality................................................................188
5.16 Discharge Pipe Temperature Control...................................................190
5.17 Position Sensor Abnormality ................................................................191
5.18 CT or Related Abnormality ...................................................................192
5.19 Thermistor or Related Abnormality (Outdoor Unit)...............................194
5.20 Electrical Box Temperature Rise..........................................................196
5.21 Radiation Fin Temperature Rise ..........................................................198
5.22 Output Over Current Detection.............................................................200
5.23 Insufficient Gas.....................................................................................202
5.24 Low-voltage Detection..........................................................................204
5.25 Anti-icing Function in Other Rooms / Unspecified Voltage
(between Indoor and Outdoor Units)....................................................205
6. Check ..................................................................................................206
6.1 How to Check .......................................................................................206